She's out! Ciara has called off her engagement to Future, multiple sources reveal in the new issue of Us Weekly. The "I'm Out" singer, 28, has called it quits with the rapper, 30, just three months after welcoming their son Future Zahir Wilburn.

"He cheated on her. Game over," an insider tells Us of the "Turn On the Lights" rapper. Another source adds: "She's devastated. Ciara's focus now is the baby."

Together for more than a year, the duo got engaged on Ciara's birthday in October 2013. They were celebrating in New York City when Future surprised her with a stunning 15-carat diamond ring. She gave birth to their son seven months later, on May 19.